AutoMapper 将 map Object 放入对象列表

Question

I want to map an object of PersonDetails class to list of Details object. The PersonDetails class is

public class PersonDetails
             {
               public PersonItems PersonItems{get;set;}
               public int CreatedBy {get;set;}
               public string PersonCode {get;set;}
             }
public class PersonItems
             {
              public string ItemCode {get; set;}
              public List<string> ItemColors {get;set;}
              public string ItemName {get; set;}
             }

For each ItemColor trying to map this to following list of object class:

public class Seller{
             public string SellerCode {get;set;}
             public Details details {get; set;}
             }
public class Details
             {
              public string ItemCode {get; set;}
              public string ItemColor {get;set;}
              public string ItemName {get; set;}
              public string PersonCode {get;set}
             }`

I have tried the following code by applying a loop on ItemColors in service class, calling automapper.

List<Details> detailsList = new();
foreach( string ItemColor in PersonDetails.PersonItems.ItemColor){
Details details = _mapper.Map<PersonDetails>( details) ;
details.Add(details);
}

I have created a seperate mapper class to register mapper methods.

public void RegisterPersonDetailstoDetailsObjectList(){
     CreateMap<PersonDetails,Details>()
     .ForMember(d => d.details.PersonCode, src=> src.MapFrom(src => src.PersonCode
     .ForMember(d => d.PersonItems, src => src.MapFrom( s => new Details
        {
            ItemCode = s.PersonItems.ItemCode,
            **ItemColor = s.PersonItems.ItemColor,**
            ItemName = s.PersonItems.ItemName
        }
}));
}

Can't figure out to get each ItemColor from the loop in bold text and pass to this automapper method. Basically I want to iterate over itemColor and assign the same to each ListOf object mapped.

Answer 1

From my understanding of your question, you seem to map from the PersonDetails object to the List<Details> list.

You need the Custom Type Converter for the following mapping:

public void RegisterPersonDetailstoDetailsObjectList()
{
     CreateMap<PersonDetails, Details>()
        .ForMember(d => d.PersonCode, src=> src.MapFrom(src => src.PersonCode))
        .ForMember(d => d.ItemCode, src => src.MapFrom(src => src.PersonItems.ItemCode))
        .ForMember(d => d.ItemName, src => src.MapFrom(src => src.PersonItems.ItemName));

     CreateMap<PersonDetails, List<Details>>()
        .ConvertUsing((src, dest, ctx) =>
        {
            dest = new List<Details>();

            foreach (string itemColor in src.PersonItems.ItemColors)
            {
                var details = ctx.Mapper.Map<Details>(src);
                details.ItemColor = itemColor;

                dest.Add(details);
            }

            return dest;
        });
}

Demo @ .NET Fiddle